Welcome to Eight in the Box, an NFL Nation feature that will appear each Friday during the offseason. This week's topic: Who should be the primary target (including trades) for each team when free agency begins?

Denver Broncos: Glover Quin, S, Texans: Sure, I could see the Broncos making a big splash at a high-profile position like receiver in the form of someone like Mike Wallace or Wes Welker. I wanted to focus on a position that may not get as much thought in Denver, but where the team is interested in getting better. The Broncos are interested in adding to the secondary. A player like Quin would be a great fit. The team likes Rahim Moore (despite his playoff gaffe against the Ravens) and they have high hopes for Quinton Carter. But Quin can come in and help these guys and provide an upgrade from Mike Adams. Getting a tough player in the back of a strong defense would only help Denver.

Kansas City Chiefs: Sean Smith, CB, Dolphins: The Chiefs are an interesting team. Despite being 2-14 in 2012, they don’t have a ton of screaming needs. Getting a quality cornerback to team with Brandon Flowers may be just the thing this defense needs. The Chiefs tried it with Stanford Routt last season (to replace top dollar Dallas free-agent signee Brandon Carr), but it didn’t work. Yes, the Chiefs could use the No. 1 pick on Alabama's Dee Milliner and I still think a trade for Darrelle Revis would be worth exploring. But adding a tall, athletic corner like Smith could be the ticket as well. He won’t be cheap, but he has skills and a Smith-Flowers pairing would be interesting.

Oakland Raiders: Cary Williams, CB, Ravens: The Raiders won't have a ton to spend and they have a lot of positions that need help. But I’m going with a cornerback, because I think it is the team’s greatest need. Really, name a legitimate starting in-house candidate in Oakland that is not an emergency option. Williams may be too sought-after for Oakland to afford. But he is a solid starter who has been through the wars. If the price is right, he’d fill a big need for Oakland. A more affordable option will be former Denver cornerback Tracy Porter. I think Oakland -- coach Dennis Allen was Porter’s position coach in New Orleans -- will be interested, but if Williams fell to Oakland, I think it would be worth considering.

San Diego Chargers: Andy Levitre, G, Bills: Levitre is one of the best guards in the league. He will be sought after in free agency. But if the price is not through the roof, I think the Chargers will be a player for his services. The Chargers’ primary task this offseason is to improve the offensive line. Levitre would be a great start. Levitre, who is from California, likely would be interested in signing and reuniting with former Buffalo offensive line coach Joe D’Alessandris, who was just hired by the Chargers. He has a zone-blocking scheme. San Diego coach Mike McCoy said the Chargers will run the scheme that best fits the players, and I'm sure D’Alessandris would like to reunite with Levitre to help introduce his system. The Chargers’ best offensive lineman, guard Louis Vasquez, is also free. In the best-case scenario, San Diego would be able to keep both players, but it’s difficult to put top resources into two guards, especially with the team needing a left tackle. But because Levitre has experience in D’Alessandris’ system, I could see him being a more valued target than Vasquez.